The only other one I can think of is the last Numenor King and Queen. Pharazon took Miriel (did I spell it right? it's been a while) against her will and took power from her and named himself King. The King gets to spend eternity under a mountain and the Queen drowned in the fall.
Eol and Aredhel don't make a very good couple either.
I think the worst couple was Aldarion and Erendis too. He was always off and she was always cranky. Their daughter didn't turn out very good either.
Agreed!
